The group was formed as a six-member boy band. Kim Ki Bum and Kevin Woo were original members of the boy band, Xing. Ki Bum left the group on 2007 while Kevinleft the group four months before the debut of U-KISS. The pre-U-Kiss activities of the two members helped the group draw attention among Korean fans.

2008-2009: Debut and new membersEdit

U-KISS debuted in Japan on August 15, 2008 at the Power of Atamix alongside SS501 & Paran. The group released their first mini album, N-Generation, on September 3, 2008. Later on, the group debuted on South Korean television, with a performance of "Not Young" on M! Countdown.

Alexander & Kevin, joined Arirang's radio show Pops in Seoul hosting the 'All About You' segment alongside co-host, Isak. The group made their comeback with their second mini album, Bring It Back 2 Old School, on February. In April, Eli became an MC of MBC's show, Fusion.

U-KISS also was also starred in variety shows: "All about U-KISS" and "You know U-KISS."

2010: First album and other activitiesEdit

Before the release of the first full length album, MBC revealed that U-KISS will star in a variety show. The show was titled U-KISS' Vampire. It was premiered on January 22, 2010.

Kevin and Alexander continued their role as hosts on Arirang's All About You show, and Eli joined them as a new co-host.

They are currently starring in a new reality show called Chef's Kiss, in which they open a restaurant and have challenges every week to decide who cooks and who waits tables.